Asteroid 7 Iris
Asteroid 7 Iris Sky Charts and Coordinates
This is a simplified sky chart, showing where Asteroid 7 Iris is now with respect to the brightest stars and constellations.
More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.
High Precision Live Sky Chart
Asteroid 7 Iris Rise and Set Times
Today's Asteroid 7 Iris rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.
Asteroid 7 Iris Orbit Diagram
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 7 Iris with respect of the Sun and the orbits of the major planets. The position of Asteroid 7 Iris and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!
View Asteroid 7 Iris in the 3D Solar System Simulator
Asteroid 7 Iris Ephemeris
The following table lists the ephemerides of Asteroid 7 Iris computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 7 Iris in our Online Planetarium at the chosen date.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2018 Nov 08 | 11h 55m 06s | -04° 19’ 06” | 10.90 | Virgo |
| 2018 Nov 09 | 11h 56m 30s | -04° 29’ 12” | 10.91 | Virgo |
| 2018 Nov 10 | 11h 57m 53s | -04° 39’ 18” | 10.91 | Virgo |
| 2018 Nov 11 | 11h 59m 17s | -04° 49’ 19” | 10.91 | Virgo |
| 2018 Nov 12 | 12h 00m 38s | -04° 59’ 20” | 10.91 | Virgo |
| 2018 Nov 13 | 12h 02m 00s | -05° 09’ 18” | 10.91 | Virgo |
| 2018 Nov 14 | 12h 03m 23s | -05° 19’ 13” | 10.92 | Virgo |
| 2018 Nov 15 | 12h 04m 44s | -05° 29’ 07” | 10.92 | Virgo |
| 2018 Nov 16 | 12h 06m 03s | -05° 38’ 57” | 10.92 | Virgo |
| 2018 Nov 17 | 12h 07m 23s | -05° 48’ 46” | 10.92 | Virgo |
| 2018 Nov 18 | 12h 08m 44s | -05° 58’ 32” | 10.92 | Virgo |
| 2018 Nov 19 | 12h 10m 03s | -06° 08’ 15” | 10.92 | Virgo |
| 2018 Nov 20 | 12h 11m 21s | -06° 17’ 56” | 10.92 | Virgo |
| 2018 Nov 21 | 12h 12m 41s | -06° 27’ 33” | 10.92 | Virgo |
Distance of Asteroid 7 Iris from Earth
The following chart shows the distance of Asteroid 7 Iris from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.
The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 7 Iris is also available as a real time updated value in the Live Position and Data Tracker.
Light Curve of Asteroid 7 Iris
The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 7 Iris, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.
Asteroid 7 Iris Physical Data
The following shows the known values of the most important physical parameters of Asteroid 7 Iris. Source: JPL Small-Body Database
| Physical Parameter | Value | Relative to Earth |
|---|---|---|
| Diameter | 199.83 km | 0.0157 |
| Sideral Rotation | 7.1390 hours | 0.2983 |
| Absolute Magnitude | 5.51 | |
| Geometric Albedo | 0.2766 | |
Asteroid 7 Iris Orbital Elements
The following table lists the orbital elements of Asteroid 7 Iris at epoch 26 April 2019 00:00 UTC (JD: 2458600.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.23120579 |
| Orbit inclination | i | 5.52365144° |
| Perihelion distance | q | 1.83383083 AU 274,337,188 km |
| Aphelion distance | Q |
2.93683680 AU 439,344,533 km |
| Semi-major axis | a |
2.38533381 AU 356,840,860 km |
| Orbital period | period |
3.6800 years 1,345.6192 days |
| Date of perihelion transit | Tp | 2017-Nov-18 03:14:27 2,458,075.6350 JD |
| Next perihelion transit | 2021-Jul-25 18:06 2,459,421.2542 JD |
|
| Argument of perihelion | peri | 145.26510345947° |
| Longitude of the ascending node | node | 259.56323263803° |
| Mean anomaly | M | 140.41965536039° |
| Mean motion | n | 0.26753483°/day |
| Closest approach to Earth* | 2017-Oct-31 | |
| Distance of closest approach* | 0.84895471 AU 127,001,816 km |
|
* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.